Podlech & Zarre (2013), vol. III, p. 2126Plants 35−70 cm tall, subshrubby. Stems of the current year 6−15 cm, densely covered with ± medifixed, appressed white and black hairs 0.8−1 mm. Stipules 6−8 mm, triangular-ovate, acuminate, adnate to the petiole for 2−4 mm, covered with black and fewer white hairs. Leaves 4−7 cm, subsessile; rachis loosely to rather densely covered with appressed to subappressed, mostly medifixed white and black hairs 0.5−1 mm. Leaflets in (4−)5−7(−8) pairs, narrowly elliptic, (8−)10−20(−28) × 3−6 mm, glabrous on upper side, on underside sparsely to loosely covered with symmetrically to asymmetrically bifurcate, appressed, white hairs 0.6−1.2 mm. Peduncles 10−20 cm, hairy like the stem. Racemes 4−10(−15) cm long, densely many-flowered. Bracts 4−6 mm, linear-triangular, covered with strongly asymmetrically bifurcate to basifixed, ascending white and black hairs. Calyx 9−12 mm, early ellipsoid-inflated, covered with strongly asymmetrically bifurcate to basifixed, spreading white hairs 1−1.2 mm and with subappressed, more symmetrically bifurcate black hairs 0.2−0.5 mm; teeth subulate, 1−2.5 mm, white hairy on inner side. Petals dingy yellow. Standard 15−16 mm; blade 4−4.5 mm wide, oblong-obovate, retuse to scarcely emarginate, distinctly constricted below the middle, auriculate-angularly widened below the constriction and passing into the narrowly cuneate claw. Wings 14−15 mm; blades narrowly oblong, retuse to scarcely emarginate, 4−5 × 1.5 mm; auricle 0.5 mm, claw 9−10 mm. Keel 13−14 mm; blades oblong-curved, with widely, slightly curved lower edge and slightly concave upper edge, subobtuse, 4 × 1.5 mm; auricle 0.3 mm, claw 9−10 mm. Stamen-tube truncate at the mouth. Ovary sessile, densely white hairy. Legumes enclosed in the calyx or slightly rupturing it, sessile, ellipsoid, 6−8 mm long, 3 mm high, keeled ventrally, slightly grooved dorsally, with a slightly reflexed, subulate beak 1.5−2 mm, bilocular; valves thinly coriaceous, densely covered with basifixed, spreading white hairs 0.8−2 mm and with very short, ascending black hairs.
